def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, 'RTTY demodulator',
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1))
channel_filter = self.__make_channel_filter()
self.__text = u''
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char, self.__char_queue, True)
self.connect(
self,
channel_filter,
self.__make_demodulator(),
self.__char_sink)
self.connect(
channel_filter,
self.__make_audio_filter(),
blocks.rotator_cc(rotator_inc(self.__demod_rate, 2000 + self.__spacing / 2)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def __init__(self, modulator, audio_rate, rf_rate, freq):
modulator = IModulator(modulator)
gr.hier_block2.__init__(
self, 'SimulatedChannel',
gr.io_signature(1, 1, gr.sizeof_float * 1),
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
)
self.__freq = freq
self.__rf_rate = rf_rate
self.__modulator = modulator
modulator_input_type = modulator.get_input_type()
if modulator_input_type.get_kind() == 'MONO':
audio_resampler = make_resampler(audio_rate, modulator_input_type.get_sample_rate())
self.connect(self, audio_resampler, modulator)
elif modulator_input_type.get_kind() == 'NONE':
self.connect(self, blocks.null_sink(gr.sizeof_float))
else:
raise Exception('don\'t know how to supply input of type %s' % modulator_input_type)
rf_resampler = rational_resampler.rational_resampler_ccf(
interpolation=int(rf_rate),
decimation=int(modulator.get_output_type().get_sample_rate()))
self.__rotator = blocks.rotator_cc(rotator_inc(rate=rf_rate, shift=freq))
self.__mult = blocks.multiply_const_cc(dB(-10))
self.connect(modulator, rf_resampler, self.__rotator, self.__mult, self)
def __init__(self, modulator, audio_rate, rf_rate, freq):
modulator = IModulator(modulator)
gr.hier_block2.__init__(
self,
'SimulatedChannel',
gr.io_signature(1, 1, gr.sizeof_float * 1),
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
)
self.__freq = freq
self.__rf_rate = rf_rate
self.__modulator = modulator
modulator_input_type = modulator.get_input_type()
if modulator_input_type.get_kind() == 'MONO':
audio_resampler = make_resampler(
audio_rate, modulator_input_type.get_sample_rate())
self.connect(self, audio_resampler, modulator)
elif modulator_input_type.get_kind() == 'NONE':
self.connect(self, blocks.null_sink(gr.sizeof_float))
else:
raise Exception('don\'t know how to supply input of type %s' %
modulator_input_type)
rf_resampler = rational_resampler.rational_resampler_ccf(
interpolation=int(rf_rate),
decimation=int(modulator.get_output_type().get_sample_rate()))
self.__rotator = blocks.rotator_cc(
rotator_inc(rate=rf_rate, shift=freq))
self.__mult = blocks.multiply_const_cc(dB(-10))
self.connect(modulator, rf_resampler, self.__rotator, self.__mult,
self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1))
channel_filter = self.__make_channel_filter()
self.__text_cell = StringSinkCell(encoding='us-ascii')
self.__text_sink = self.__text_cell.create_sink_internal()
self.connect(
self,
channel_filter,
self.__make_demodulator(),
self.__text_sink)
self.connect(
channel_filter,
self.__make_audio_filter(),
blocks.rotator_cc(rotator_inc(self.__demod_rate, 2000 + self.__spacing / 2)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1))
channel_filter = self.__make_channel_filter()
self.__text_cell = StringSinkCell(encoding='us-ascii')
self.__text_sink = self.__text_cell.create_sink_internal()
self.connect(
self,
channel_filter,
self.__make_demodulator(),
self.__text_sink)
self.connect(
channel_filter,
self.__make_audio_filter(),
blocks.rotator_cc(rotator_inc(self.__demod_rate, 2000 + self.__spacing / 2)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, 'RTTY demodulator',
gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
gr.io_signature(1, 1, gr.sizeof_float * 1))
channel_filter = self.__make_channel_filter()
self.__text = u''
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char,
self.__char_queue, True)
self.connect(self, channel_filter, self.__make_demodulator(),
self.__char_sink)
self.connect(
channel_filter, self.__make_audio_filter(),
blocks.rotator_cc(
rotator_inc(self.__demod_rate, 2000 + self.__spacing / 2)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1), self)
def __update_rotator(self):
device = self.__get_device()
sample_rate = device.get_rx_driver().get_output_type().get_sample_rate()
if self.__demod_tunable:
# TODO: Method should perhaps be renamed to convey that it is relative
self.__demodulator.set_rec_freq(self.__freq_relative)
else:
self.__rotator.set_phase_inc(rotator_inc(rate=sample_rate, shift=-self.__freq_relative))
def __update_rotator(self):
device = self.__get_device()
sample_rate = device.get_rx_driver().get_output_type().get_sample_rate()
if self.__demod_tunable:
# TODO: Method should perhaps be renamed to convey that it is relative
self.__demodulator.set_rec_freq(self.__freq_relative)
else:
self.__rotator.set_phase_inc(rotator_inc(rate=sample_rate, shift=-self.__freq_relative))
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
channel_filter = self.__make_channel_filter()
self.__text = u''
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char, self.__char_queue, True)
# The output of the channel filter is oversampled so we don't need to
# interpolate for the audio monitor. So we'll downsample before going into
# the demodulator.
samp_per_sym = 8
downsample = self.__demod_rate / samp_per_sym / self.__symbol_rate
assert downsample % 1 == 0
downsample = int(downsample)
self.connect(
self,
channel_filter,
blocks.keep_one_in_n(gr.sizeof_gr_complex, downsample),
psk31_coherent_demodulator_cc(samp_per_sym=samp_per_sym),
psk31_constellation_decoder_cb(
varicode_decode=True,
differential_decode=True),
self.__char_sink)
self.connect(
channel_filter,
blocks.rotator_cc(rotator_inc(self.__demod_rate, self.__audio_frequency)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def __init__(self, mode, input_rate=0, context=None):
assert input_rate > 0
self.__input_rate = input_rate
gr.hier_block2.__init__(
self, type(self).__name__,
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(1, 1, gr.sizeof_float))
channel_filter = self.__make_channel_filter()
self.__char_queue = gr.msg_queue(limit=100)
self.__char_sink = blocks.message_sink(gr.sizeof_char, self.__char_queue, True)
# The output of the channel filter is oversampled so we don't need to
# interpolate for the audio monitor. So we'll downsample before going into
# the demodulator.
samp_per_sym = 8
downsample = self.__demod_rate / samp_per_sym / self.__symbol_rate
assert downsample % 1 == 0
downsample = int(downsample)
self.connect(
self,
channel_filter,
blocks.keep_one_in_n(gr.sizeof_gr_complex, downsample),
psk31_coherent_demodulator_cc(samp_per_sym=samp_per_sym),
psk31_constellation_decoder_cb(
varicode_decode=True,
differential_decode=True),
self.__char_sink)
self.connect(
channel_filter,
blocks.rotator_cc(rotator_inc(self.__demod_rate, self.__audio_frequency)),
blocks.complex_to_real(vlen=1),
analog.agc2_ff(
reference=dB(-10),
attack_rate=8e-1,
decay_rate=8e-1),
self)
def set_freq(self, value):
self.__freq = float(value)
self.__rotator.set_phase_inc(rotator_inc(rate=self.__rf_rate, shift=self.__freq))
def _set_sim_freq(self, freq):
self.__rotator.set_phase_inc(rotator_inc(rate=self.rf_rate, shift=-freq))
def set_freq(self, value):
self.__freq = float(value)
self.__rotator.set_phase_inc(
rotator_inc(rate=self.__rf_rate, shift=self.__freq))
def _set_sim_freq(self, freq):
self.__rotator.set_phase_inc(
rotator_inc(rate=self.rf_rate, shift=-freq))